Solid-Liquid Interfacial Effects on Residual Oil Distribution Utilizing Three-Dimensional Micro Network Models

Weiyao Zhu, Bingbing Li, Yajing Liu, Hongqing Song and Xiaofeng Wang
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Weiyao Zhu: School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
Bingbing Li: School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
Yajing Liu: School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
Hongqing Song: School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
Xiaofeng Wang: Research Institute of Yanchang Petroleum (Group) Co. Ltd., Shanxi 716000, China

Energies, 2017, vol. 10, issue 12, 1-16

Abstract: A number of experiments on fluid flow at the micro/nano-scale have demonstrated that flow velocity obviously deviates from the classical Poiseuille’s law due to the micro forces between the wall and the fluid. Based on an oil–water two-phase network simulation model, a three-dimensional pore-scale micro network model with solid–liquid interfacial effects was established. The influences of solid–liquid interface effects including van der Waals force and wettability on the residual oil distribution and relative permeability were investigated through microscopic simulation. The effects of pore radius, pore–throat size ratio, shaping factor, and coordination number on the residual oil distribution were analyzed at the same time. The results showed that the oil recovery would be overestimated by about 4% without van der Waals force in a water-wet reservoir. The impact of van der Waals force on water-wet reservoirs was significantly obvious in contrast with oil-wet reservoirs. In addition, the residual oil distribution was significantly influenced by pore radius in water-wet reservoir, comparatively influenced by pore–throat size ratio in oil-wet reservoir. The present study illustrates the successful application of three-dimensional micro network models considering solid–liquid interfacial effects, and provides new insights for oil recovery enhancement.

Keywords: van der waals force; solid–liquid interface effects; three-dimensional micro network model; residual oil distribution (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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